How to Solve Wirelesss router issues vs. ISP issues

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http://askubuntu.com – So I've been having a lot of issues with my internet connection since installing 12.04. This is happening on both of my laptops that run this version. My mac has no issues although I did just notice one page that took a while to load. Which brings me to the question. What tools should I get and how would I go about testing whether the issue is at the wireless or the actual internet. Is there something that could monitor and tell me if there are lapses in connection? This whole time I've been assuming that my older laptop (2005) and my netbook are just not getting along with Ubuntu 12.04 (HowTos)